what does all this good-bye stuff tell you? >> obama looks glad it's over. he looks relieved. he doesn't look victorious. romney looks happy and he looks relieved but you can tell that he feels victorious. >> how do you know that barack obama was relieved it was over? what did his face or body tell you? >> just his posture sort of drooped a little bit. he walked over more quickly not because he wanted to be assertive but because he sort of wanted it to be over with, then he goes over to michelle and again, there's this sort of -- it's very, very subtle but this kind of collapsing body language that looks a little bit defeated. romney is showing the opposite. he's doing more of the sort of -- he actually looks -- he loves everyone right now. >> gary tuchman with harvard business school professor amy cuddy. we appreciate it. >>> someone else who was watching the debate closely, alan schroeder, author of "presidential debates, 50 years of high risk tv" and journalism professor in boston, wrote about his take on last night's debate on cnn.com. he joins me now with historical persp